/* Ejercicio 3.42
   ejer3_42.c */
#include <stdio.h>

/* funcion main, el programa inicia aca */
int main( void )
{
    float radius;
    float pi = 3.14159;

    printf( "Enter the radius: " );
    scanf( "%f", &radius );
    printf( "The diameter is: %.2f\n", 2 * radius );
    printf( "The circumference is: %.2f\n", 2 * pi * radius );
    printf( "The area is: %.2f\n", pi * radius * radius );
	return 0;
} /* fin de la funcion main */
